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ACARINA. 
TROMBIDIIDAE (Harvest-mites). 
Actineda sp. i 
TARSONEMIDAE. 
Tarsonymus floricolus, Canestrini & Fanzago. On leaves of 
Ceropegia Woodii (see Kew Bull., 1895, 285-6). 
T. Kirchneri, Kramer (= T. buxi, Canestrini & Rerleate): On 
leaves of Begonia, Cyclamen, ác. 
GAMASIDAE. 
Gamasus coleoptratorum, L, Parasitic on the dung beetle. 
Holotaspis montivagus, Berlesc. Parasitic on the dung beetle. 
Laelaps sp. Parasitic on the dung beetle. 
Lejus sp. Parasitic on Rhizoglyphus echinopus and Histiostoma 
rostroserratum. 
HYDRACHNIDAE (Water-mites). 
By Chas. D. Soar, F.R.M.S. 
Several collections have been made during the present vear in 
the waters of Kew Gardens for Hydrachnidae, but although a large 
number of specimens were taken, they represent only a small 
si. 15 : fr 
considerably to the present small list. As most if not all of the 
Hydrachnids nd the larval stage as parasites for about a year, 
it is more than probable that the list will be largely extended. 
Hygrobatinae. 
Atax crassipes, Mill. Free swimming in lake near Palm House. 
A. intermedius, Koenike. Parasitic in fresh-water mussel, 
common in large lake. This Hydrachnid can be found in all 
stages in the mussel. 
Piona conglobatus, Koch. Found in large lake and lily pond. 
P. rufa, Koch. Large lake. 
Limnesia histrionica, Hermann. Common in large lake. 
L. koenikei, Piersig. Lily-pond and large lake. 
L. undulata, Müll. Lily pond. 
